package com.yueman.ptoolopenticket.ticket.utils.lixin;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

/**
 * Created by syf0405 on 2019/4/11.
 */
public class AesUtil {
    public static final String VIPARA = "1269571569321021";

    /**
     * AES加密字符串
     *
     * @param content
     *            需要被加密的字符串
     * @param password
     *            加密需要的密码
     * @return 密文
     */
    public static byte[] encrypt(String content, String password) {
        try {
            IvParameterSpec zeroIv = new IvParameterSpec(VIPARA.getBytes());
//            KeyGenerator kgen = KeyGenerator.getInstance("AES");// 创建AES的Key生产者
//
//            SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
//            random.setSeed(password.getBytes());
//            kgen.init(128, random);// 利用用户密码作为随机数初始化出
//            // 128位的key生产者
//            //加密没关系，SecureRandom是生成安全随机数序列，password.getBytes()是种子，只要种子相同，序列就一样，所以解密只要有password就行
//
//            SecretKey secretKey = kgen.generateKey();// 根据用户密码，生成一个密钥
//
//            byte[] enCodeFormat = secretKey.getEncoded();// 返回基本编码格式的密钥，如果此密钥不支持编码，则返回
//            // null。
//
//            SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");// 转换为AES专用密钥
            SecretKeySpec key = new SecretKeySpec(password.getBytes(), "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");// 创建密码器

            byte[] byteContent = content.getBytes("utf-8");

            cipher.init(Cipher.ENCRYPT_MODE, key,zeroIv);// 初始化为加密模式的密码器
            System.out.println(cipher.getAlgorithm());
            System.out.println(cipher.getIV());
            byte[] result = cipher.doFinal(byteContent);// 加密

            return result;

        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        } catch (InvalidAlgorithmParameterException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 解密AES加密过的字符串
     *
     * @param content
     *            AES加密过过的内容
     * @param password
     *            加密时的密码
     * @return 明文
     */
    public static byte[] decrypt(byte[] content, String password) {
        try {
            IvParameterSpec zeroIv = new IvParameterSpec(VIPARA.getBytes());
            //KeyGenerator kgen = KeyGenerator.getInstance("AES");// 创建AES的Key生产者
            //SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
            //random.setSeed(password.getBytes());
            //kgen.init(128, random);
            //SecretKey secretKey = kgen.generateKey();// 根据用户密码，生成一个密钥
            //byte[] enCodeFormat = secretKey.getEncoded();// 返回基本编码格式的密钥
            //SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");// 转换为AES专用密钥
            SecretKeySpec key = new SecretKeySpec(password.getBytes(), "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");// 创建密码器
            cipher.init(Cipher.DECRYPT_MODE, key,zeroIv);// 初始化为解密模式的密码器
            byte[] result = cipher.doFinal(content);
            return result; // 明文

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        } catch (InvalidAlgorithmParameterException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void main(String[] args) throws Exception {
        String registerKey="MDcpVv1PYj9yckleSDhxAeKH+34mpPRW6vv4uoZz+M4xZayjUj73nRylciOjkk7/HmP30De11BqbnGfEK1DZiR04KFSNod3ryn4qLiDvQ2jNfH8N9Kn4oFSMv2xVRdPKHm3EWs5RQ+YewzjaW0EvYFkqJg802owqzyTywPsbyZk=";
        String publicKey="MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCrUm3lMxFtFayId1IEJ4dhJwzW/9GNKb5yPOhgqfMP7ZaHR0CTWOZ6+IxQoLEOzAPKf+J1nqGQP8eKs2mgKVHwEZZFOZ+4iM7WQOW/G4IIYlaWbn32jnnOSQrmNJtfPPdZZW8vykMKbhT9tr9CwrAH0MEr9Xz0S6+F5zmmWtWCvQIDAQAB";
           /*String content="hello world";
            String password=RsaUtil.decrypt(Base64.decode(registerKey),
                    publicKey);
            String password16=UUID.randomUUID().toString().substring(0,16);
            System.out.println("16password="+ password16);
            System.out.println("base64Ed rsaEncrypted password=="+ Base64.encode(RsaUtil.encrypt(password16,LxhwCommonConfig.getInstance().getProperties("privateKey"))));

            System.out.println("password="+password);
            byte[] b=AesUtil.encrypt(content,password);
            System.out.println("encrypted bytes-->"+ b);
            System.out.println("encrypted String-->"+ Base64.encode(b));
            System.out.println(new String(AesUtil.decrypt(b,password)));
        System.out.println(Base64.encode(AesUtil.encrypt("xianggang",password)));*/
           String mw="OPww8\\/4j2acxLBKsD49heY7im9m795G7Gx+XeBdWfFMYE0vpdJPA4QQaxGBemdIMza7S0hxcuD\\/WHGb0d7LegQ==";
           String password=RsaUtil.decrypt(Base64.decode(registerKey),publicKey);
        System.out.println(new String(AesUtil.decrypt(Base64.decode(mw),password)));

    }




}
